Patents by Inventor Bert J. White

Bert J. White has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Current mode approach to spindle motor current control and rotor position sense
    Patent number: 6462496
    Abstract: A control circuit for motor current including a circuit to generate a voltage to indicate the actual motor current, a first convert circuit to convert the voltage indicative of the motor current to a current, a compare circuit to compare the current indicating the motor current with a reference current and generate a difference current between the current indicating the motor current and the reference current, and a second convert circuit to convert the difference current to a voltage to indicate a difference in motor current from the reference current.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: October 8, 2002
    Assignee: Texas Instruments Incorporated
    Inventors: Mehedi Hassan, Fredrick W. Trafton, Bert J. White, Vincent T. Ng